72163902 has 8 divisors (see below), whose sum is σ = 144327816. Its totient is φ = 24054632.

The previous prime is 72163879. The next prime is 72163913. The reversal of 72163902 is 20936127.

It is a sphenic number, since it is the product of 3 distinct primes.

72163902 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 72163902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013653 + ... + 6013664.

It is an arithmetic number, because the mean of its divisors is an integer number (18040977).

Almost surely, 2^72163902 is an apocalyptic number.

72163902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72163902 is a wasteful number, since it uses less digits than its factorization.

72163902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12027322.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 72163902 is about 8494.9339020383. The cubic root of 72163902 is about 416.3322012085.

The spelling of 72163902 in words is "seventy-two million, one hundred sixty-three thousand, nine hundred two".